Editing Reciprocal

{{wiktionary|reciprocal}}
'''Reciprocal''' may refer to:
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==In mathematics==

* [[Multiplicative inverse]], in   mathematics, the number 1/''x'', which multiplied by ''x'' gives the product 1, also known as a ''reciprocal''
* [[Reciprocal polynomial]], a polynomial obtained from another polynomial by reversing its coefficients
* [[Reciprocal rule]], a technique in calculus for calculating derivatives of reciprocal functions
* [[Hyperbolic spiral|Reciprocal spiral]], a plane curve
* [[Reciprocal averaging]], a statistical technique for aggregating categorical data

==In science and technology==

* Reciprocal [[aircraft heading]], 180 degrees (the opposite direction) from a stated heading
* [[Reciprocal lattice]], a basis for the dual space of covectors, in crystallography
* [[Reciprocal length]], a measurement used in science
* [[Reciprocating engine]] or piston engine
* [[Reciprocating oscillation]] in physical wave theory

===Life sciences and medicine===

* [[Hybrid (biology)]], in genetics, the result of a reciprocal pair of crossings, forming ''reciprocal hybrids''
* [[Reciprocal altruism]], a form of symbiotic relationship in evolutionary biology
* [[Reciprocal cross]], a breeding experiment in genetics
* [[Sherrington's law of reciprocal innervation]] in the theory of muscle activation

===Social sciences===

* [[Reciprocal determinism]], a theory in psychology

===Linguistics===

* [[Reciprocal construction]], a construction in which agent and patient are in a mutual relationship

==In reciprocal relationships==

* [[Reciprocal license]], a type of software licenses also known as copyleft
* [[Reciprocal link]] between two web pages
* [[Reciprocal obligation]], in law, a type of agreement between two individuals
* [[Reciprocal Public License]] (RPL), a software license

==See also==
* [[Reciprocation (disambiguation)]]
* [[Reciprocity (disambiguation)]]

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